Air-aspiration type composite straw returning machine

Abstract

The invention discloses an air-aspiration type composite straw returning machine comprising a stubble skim plough. The air-aspiration type composite straw returning machine is characterized in that the stubble skim plough is provided with a support frame which is provided with a fan, and the fan drives the power input wheel of the stubble skim plough by a driving band; the air inlet of the fan isconnected with two similar splayed main material suction ports; the main material suction ports are connected with a left similar splayed assistant material suction port and a right similar splayed assistant material suction port; and the outlet of the fan is a circular cylinder and is provided with a material guidance barrel rotating around the outlet of the fan. The machine provided by the invention has the advantages that the negative pressure of the fan is utilized to suck smashed straws covering the ground surface into the fan, then the smashed straws are introduced to a returning grooveat the side by the material guidance barrel to make good preparation for deeply burying straws subsequently; in addition, the machine provided by the invention can be combined with the existing common stubble skim plough so as to be conveniently connected with a tractor, and primary operation can obtain the purposes of deep straw returning and surface layer returning. The machine provided by the invention is convenient to intensively improve the soil fertility and the decomposition and the mature of the straws and has high working efficiency and small power consumption.

Description

technical field [0001] The invention relates to an agricultural machine, in particular to an air-suction compound straw returning machine, which can suck up broken corn or other crop straws on the surface through a fan and direct them into the returning ditch. Return the stubble to the field. Background technique [0002] At present, after the crops are harvested, the straw can be returned to the field, thereby increasing the organic matter content in the soil, changing the soil from compacted to loose, increasing air permeability and water permeability, and improving drought resistance and moisture conservation. However, there are still some problems in the process of returning the existing stubble machines. For example, the straw returning to the field is shallow, and the depth of straw entering the soil in most plots is less than 20 cm, so it is not conducive to the decomposition and maturity of the straw, which affects the root system of the crops; and there are crops. ...

AI Technical Summary

Problems solved by technology

However, there are still some problems in the process of returning the existing stubble machines. For example, the straw returning to the field is shallow, and the depth of straw entering the soil in most plots is less than 20 cm, so it is not conducive to the decomposition and maturity of the straw, which affects the root system of the crops; and there are crops. The contradiction between seedlings and straw decomposing and competing for water appeared, resulting in the phenomenon of yellow seedlings and dead seedlings

A better solution is the deep returning technology of straw, that is, to open a ditch of 40 to 50 cm, then introduce the straw into the ditch, and then make a ridge to bury the straw deeply, so as to improve the fertility of the soil and the concentration of the straw. However, how to guide the straw within a certain width on both sides of the deep ditch into the return ditch, there is still a lack of corresponding equipment with high collection efficiency and low power consumption

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